He’s a Scorpio. He’s 177 cm or 5'9½" tall. MK, J-Us, U, and Laun’s blood type is AB. He was born in the Year of the Pig.

His overall trainee period was seven years. He spent part of that time as a trainee at Starship Ent. While he was there, he competed on “No.Mercy,” the reality competition show that created Monsta X. He and the rest of the ONF members competed on the show “MixNine.” He can play the guitar.

He’s a member of ONF’s sub-unit On. He came up with his own stage name; he says that MK stands for “Min Karat.” He can mimic the sound of an elephant. The other ONF members say that he looks like a cat.